Fast b-tagging at the high-level trigger of the ATLAS experiment in LHC Run 3

被引：4

作者：

Aad, G. ^{[159
]}

Abbott, B. ^{[179
]}

Abeling, K. ^{[83
]}

Abicht, N. J. ^{[76
]}

Abidi, S. H. ^{[47
]}

Aboulhorma, A. ^{[60
]}

Abramowicz, H. ^{[224
]}

Abreu, H. ^{[223
]}

Abulaiti, Y. ^{[176
]}

Abusleme Hoffman, A. C. ^{[201
]}

Acharya, B. S. ^{[107
,108
,260
]}

Adam Bourdarios, C. ^{[5
]}

Adamczyk, L. ^{[138
]}

Adamek, L. ^{[229
]}

Addepalli, S. V. ^{[38
]}

Addison, M. J. ^{[158
]}

Adelman, J. ^{[174
]}

Adiguzel, A. ^{[30
]}

Adye, T. ^{[198
]}

Affolder, A. A. ^{[200
]}

Afik, Y. ^{[62
]}

Agaras, M. N. ^{[14
]}

Agarwala, J. ^{[116
,117
]}

Aggarwal, A. ^{[157
]}

Agheorghiesei, C. ^{[41
]}

Ahmad, A. ^{[62
]}

Ahmadov, F. ^{[13
,62
,271
]}

Ahmed, W. S. ^{[161
]}

Ahuja, S. ^{[151
]}

Ai, X. ^{[91
,92
]}

Aielli, G. ^{[122
,123
]}

Aikot, A. ^{[239
]}

Ait Tamlihat, M. ^{[60
]}

Aitbenchikh, B. ^{[57
]}

Aizenberg, I. ^{[245
]}

Akbiyik, M. ^{[157
]}

Akesson, T. P. A. ^{[154
]}

Akimov, A. V. ^{[62
]}

Akiyama, D. ^{[244
]}

Akolkar, N. N. ^{[36
]}

Al Khoury, K. ^{[65
]}

Alberghi, G. L. ^{[35
]}

Albert, J. ^{[241
]}

Albicocco, P. ^{[80
,81
]}

Albouy, G. L. ^{[89
]}

Alderweireldt, S. ^{[79
]}

Aleksa, M. ^{[62
]}

Aleksandrov, I. N. ^{[62
]}

Alexa, C. ^{[40
]}

Alexopoulos, T. ^{[11
]}

机构：

[1] Univ Adelaide, Dept Phys, Adelaide, SA, Australia

[2] Univ Alberta, Dept Phys, Edmonton, AB, Canada

[3] Ankara Univ, Dept Phys, Ankara, Turkiye

[4] TOBB Univ Econ & Technol, Div Phys, Ankara, Turkiye

[5] Univ Savoie Mont Blanc, LAPP, CNRS, IN2P3, Annecy, France

[6] Univ Paris Cite, CNRS, IN2P3, APC, Paris, France

[7] Argonne Natl Lab, Div High Energy Phys, Argonne, IL USA

[8] Univ Arizona, Dept Phys, Tucson, AZ 85726 USA

[9] Univ Texas Arlington, Dept Phys, Arlington, TX USA

[10] Natl & Kapodistrian Univ Athens, Dept Phys, Athens, Greece

[11] Natl Tech Univ Athens, Phys Dept, Zografos, Greece

[12] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA

[13] Azerbaijan Acad Sci, Inst Phys, Baku, Azerbaijan

[14] Barcelona Inst Sci & Technol, Inst Fis Altes Energies IFAE, Barcelona, Spain

[15] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China

[16] Tsinghua Univ, Dept Phys, Beijing, Peoples R China

[17] Nanjing Univ, Dept Phys, Nanjing, Peoples R China

[18] Sun Yat sen Univ, Sch Sci, Shenzhen Campus, Shenzhen, Peoples R China

[19] Univ Chinese Acad Sci UCAS, Beijing, Peoples R China

[20] Univ Belgrade, Inst Phys, Belgrade, Serbia

[21] Univ Bergen, Dept Phys & Technol, Bergen, Norway

[22] Lawrence Berkeley Natl Lab, Phys Div, Berkeley, CA 94720 USA

[23] Univ Calif Berkeley, Berkeley, CA USA

[24] Humboldt Univ, Inst Phys, Berlin, Germany

[25] Univ Bern, Albert Einstein Ctr Fundamental Phys, Bern, Switzerland

[26] Univ Bern, High Energy Phys Lab, Bern, Switzerland

[27] Univ Birmingham, Sch Phys & Astron, Birmingham, England

[28] Bogaz Univ, Dept Psychol, Istanbul, Turkiye

[29] Gaziantep Univ, Dept Phys & Engn, Gaziantep, Turkiye

[30] Istanbul Univ, Dept Phys, Istanbul, Turkiye

[31] Univ Antonio Narino, Fac Ciencias, Bogota, Colombia

[32] Univ Antonio Narino, Ctr Invest, Bogota, Colombia

[33] Univ Nacl Colombia, Dept Fis, Bogota, Colombia

[34] Univ Bologna, Dipartimento Fis & Astron A Righi, Bologna, Italy

[35] INFN, Sez Bologna, Bologna, Italy

[36] Univ Bonn, Phys Inst, Bonn, Germany

[37] Boston Univ, Dept Phys, Boston, MA 02115 USA

[38] Brandeis Univ, Dept Phys, Waltham, MA 02453 USA

[39] Transilvania Univ Brasov, Brasov, Romania

[40] Horia Hulubei Natl Inst Phys & Nucl Engn, Bucharest, Romania

[41] Alexandru Ioan Cuza Univ, Dept Phys, Iasi, Romania

[42] Natl Inst Res & Dev Isotop & Mol Technol, Dept Mol & Biomol Phys, Cluj Napoca, Romania

[43] Univ Politehn Bucuresti, Bucharest, Romania

[44] West Univ Timisoara, Timisoara, Romania

[45] Comenius Univ, Fac Math Phys & Informat, Bratislava, Slovakia

[46] Slovak Acad Sci, Inst Expt Phys, Dept Subnuclear Phys, Kosice, Slovakia

[47] Brookhaven Natl Lab, Phys Dept, Upton, NY 11973 USA

[48] Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Fis, Buenos Aires, DF, Argentina

[49] Univ Buenos Aires, CONICET, Inst Fis Buenos Aires IFIBA, Buenos Aires, DF, Argentina

[50] Calif State Univ, Fresno, CA USA

来源：

JOURNAL OF INSTRUMENTATION | 2023年 / 18卷 / 11期

基金：

欧盟地平线“2020”; 加拿大自然科学与工程研究理事会; 巴西圣保罗研究基金会;

关键词：

Trigger algorithms; Trigger concepts and systems (hardware and software);

D O I：

10.1088/1748-0221/18/11/P11006

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The ATLAS experiment relies on real-time hadronic jet reconstruction and b-tagging to record fully hadronic events containing b-jets. These algorithms require track reconstruction, which is computationally expensive and could overwhelm the high-level-trigger farm, even at the reduced event rate that passes the ATLAS first stage hardware-based trigger. In LHC Run 3, ATLAS has mitigated these computational demands by introducing a fast neural-network-based b-tagger, which acts as a low-precision filter using input from hadronic jets and tracks. It runs after a hardware trigger and before the remaining high-level-trigger reconstruction. This design relies on the negligible cost of neural-network inference as compared to track reconstruction, and the cost reduction from limiting tracking to specific regions of the detector. In the case of Standard Model HH -> b (b) over barb (b) over bar, a key signature relying on b-jet triggers, the filter lowers the input rate to the remaining high-level trigger by a factor of five at the small cost of reducing the overall signal efficiency by roughly 2%.

引用

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